129921280

素因数分解:

$2^8\times 5^1\times {\mathrm{101501}}^1$

素因数の和:101522

約数の個数: 36

約数和(自身を含む): 311205132

約数和(自身を除く): 181283852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 101501, 203002, 406004, 507505, 812008, 1015010, 1624016, 2030020, 3248032, 4060040, 6496064, 8120080, 12992128, 16240160, 25984256, 32480320, 64960640, 129921280]

約数ペア:

[(1, 129921280), (2, 64960640), (4, 32480320), (5, 25984256), (8, 16240160), (10, 12992128), (16, 8120080), (20, 6496064), (32, 4060040), (40, 3248032), (64, 2030020), (80, 1624016), (128, 1015010), (160, 812008), (256, 507505), (320, 406004), (640, 203002), (1280, 101501)]